薄板坯连铸连轧工艺下Hi-B钢的组织及织构
发布时间：2018-12-18 14:06
【摘要】：采用金相显微镜和扫描电镜研究实验室模拟薄板坯连铸连轧(TSCR)工艺试制的高磁感取向硅钢(Hi-B钢)组织、织构的演变特征.研究发现实验室模拟薄板坯连铸连轧工艺试制的Hi-B钢热轧板显微组织及织构在厚度方向上存在不均匀性.常化板表面脱碳层铁素体晶粒明显粗化,常化板织构基本继承了热轧板相应的织构类型,仅织构强度不同.一次大压下率冷轧后,晶粒及其晶界沿轧向被拉长形成鲜明的纤维组织,织构主要为α纤维织构和γ纤维织构,脱碳退火后试样发生回复和再结晶现象并形成初次晶粒组织,脱碳退火后织构分布较为集中.温度升高至1000℃时二次再结晶开始,1010℃时钢中晶粒发生异常长大,高斯织构强度达到61.779.成品磁感为1.915 T,铁损为1.067 W·kg~(-1).
[Abstract]:The microstructure and texture evolution characteristics of high magnetically oriented silicon steel (Hi-B steel) produced by (TSCR) process were studied by metallographic microscope and scanning electron microscope (SEM). It is found that the microstructure and texture of hot rolled Hi-B steel produced by laboratory simulation of thin slab continuous casting and rolling process are not uniform in thickness direction. The ferrite grain of decarburized layer on the surface of the normal plate is obviously coarser. The texture of the normal plate inherits the corresponding texture type of the hot rolled plate basically, but the texture strength is different. After cold rolling at a high pressure rate, the grain and its grain boundary are elongated along the rolling direction to form distinct fiber structure. The texture is mainly 伪 fiber texture and 纬 fiber texture. After decarbonization annealing, the recovery and recrystallization of the sample occur and the primary grain structure is formed. The texture distribution after decarburization annealing is relatively concentrated. When the temperature rises to 1000 鈩，
本文编号：2385957
[Abstract]:The microstructure and texture evolution characteristics of high magnetically oriented silicon steel (Hi-B steel) produced by (TSCR) process were studied by metallographic microscope and scanning electron microscope (SEM). It is found that the microstructure and texture of hot rolled Hi-B steel produced by laboratory simulation of thin slab continuous casting and rolling process are not uniform in thickness direction. The ferrite grain of decarburized layer on the surface of the normal plate is obviously coarser. The texture of the normal plate inherits the corresponding texture type of the hot rolled plate basically, but the texture strength is different. After cold rolling at a high pressure rate, the grain and its grain boundary are elongated along the rolling direction to form distinct fiber structure. The texture is mainly 伪 fiber texture and 纬 fiber texture. After decarbonization annealing, the recovery and recrystallization of the sample occur and the primary grain structure is formed. The texture distribution after decarburization annealing is relatively concentrated. When the temperature rises to 1000 鈩，
本文编号：2385957
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